Here is the press release issued by the USEPA on its settlement reached yesterday with Safeway (US) over that organisation’s use of HCFC-22 (R-22) at its stores.
Here is the USEPA web page providing information and links re. the HCFC phase-out programme (US).
This USEPA source provides the Clean Air Act context and information issued in respect of refrigeration and stationary sources that use ozone depleting substances.